Vagante is a punishing platformer that rewards players who pay attention to their surroundings and who can think strategically, as well as those who have the skills to mechanically execute their plans. It's very similar to Spelunky but it also adds some RPG elements on top of the normal mechanics for those types of games and IMO this makes playing each run a lot more rewarding. I haven't played through all the content on the Early Access version but the demo that was released a few months back lasted me about 15 hours before I got bored, so this version should go for more than that at least since it has more content.

Anyway, if you liked Spelunky then you'll probably like this.